俘精酸酐

It was found that photoinduced cyclization of aryl fulgides is a fast process, and only the excited signlet state is involved in the photocyclization reaction.

结果表明，这类芳环取代的俘精酸酐的光致环合反应是经过激发单重态进行的快速过程。

The one is-2-isopropylidene-3-[1-(3,4-dimethoxyphenyl)ethyl-idene] succinic anhydride, the other is-2-isopropylidene-3-[1-(3,4-methylenedioxyphenyl)- ethylidene] succinic anhydride.

合成了三种苯基俘精酸酐，其中具有给电子基的3-(3，4-二甲氧基苯基)亚乙基(2-亚丙基)丁二酸酐与3-(3，4-亚甲二氧基苯基)亚乙基(2-亚丙基)丁二酸酐是新化合物。

In recent years, photochromism has great development in basic study and application. Especially heteraryl fulgide family compound attracts more attentions of scientists and engineers.

近年来，有机光致变色学在基础研究和应用开发两个方面都获得了重大进展，其中芳杂环取代俘精酸酐家族化合物是最引人注目的热点之一。

For 5-selenazolyl fulgide. In steady state, the Z and E photoisomerization is easily observed only by the change of absorption spectra.

在稳态条件下，5-硒唑俘精酸酐只能观察到Z和E之间的光异构化，而不能观察到它们的光环合产物。

Holographic recording characteristics of a rewritable fulgide / PMMA film［J］.

可擦写俘精酸酐/PMMA薄膜的全息记录特性研究［J］。

Photochromism of 5-selenazolyl fulgide is studied.

研究了5-硒唑俘精酸酐的光致变色反应。

The electron donorability of the electron donor part of the fulgide decreases when cationcomplexes with crown ether, and the intromolecular charge transfereffect reduces.

金属离子较大的电荷密度以及金属离子与冠醚较好的匹配使冠醚俘精酸酐分子内的电荷转移更不易进行，造成了光谱较大的蓝移。

The presence ofelectron donor(methoxy or methylenedioxy group) and electronacceptor anhydride group） moieties on phenyl fulgide derivativesleads to an intramolecular charge transfer upon exication that results ina solvatochromic effect.

可将苯基俘精酸酐视为由给电子基和得电子基两部分组成，分子内的电荷转移是造成正溶剂效应的主要原因。

Optical image storage using pyrryl fulgide .

吡咯俘精酸酐的图像光存储特性。

Experiment shows the colored form of 5-selenazolyl fulgide is unsteady and decayed within several microsecond period, its coloration occurred through the excited singlet state and excited triplet state. The photochromic mechanism is shown as following.

实验结果表明，从开环体到闭环体不仅是经由激发单重态而且还通过激发三重态两种光反应机理，结果如下图所示。5-硒唑俘精酸酐的成色体很不稳定，在几个微秒时间范围内即重新生成开环体。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。